SAO星表

史密斯天文台星表是史密斯天文台发布的一款星表，星表数据主要来源于1966年的史密斯天文台观测数据，1979年加入了赤道坐标的弧度信息和SAO/HD/DM/GC（Morin1973）交叉证认信息。1984年根据最新的观测信息又更新了这些数据，截至1984年的数据信息都是基于J1950的，1990年发布的版本开始基于J2000。其中主星表中包含了258997个天体非常精确的位置、自行等信息。该数据集于1990年对外释放。The Smithsonian Observatory Star Catalog is a star catalog published by the Smithsonian Observatory. Its core data was primarily sourced from the observational datasets collected by the Smithsonian Observatory in 1966. In 1979, radian-format equatorial coordinate information and cross-identification data for the SAO/HD/DM/GC catalogs (Morin 1973) were added to the catalog. These data were updated in 1984 using the latest observational records, and all data through 1984 were referenced to the J1950 coordinate epoch. The 1990 release of the catalog adopted the J2000 coordinate epoch as its reference standard. The main catalog contains extremely precise positional measurements, proper motion data, and other relevant information for a total of 258,997 celestial bodies. This dataset was publicly released in 1990.